The MasterLiquid PRO Models requires a new bracket - what I said before.
And, all coolers will have a sticker on the box to indicate if they support AM4 (or not).
If you have any further questions, let me know.

Do you mean these?
http://www.coolermaster.com/case/case-accessories/universal-single-color-led-strip/
it can be bought here:
http://www.cmstore.eu/case/cooler-master-led-strip-sata-connector-packed-per-2/
For US & APAC region it will be added asap.

The one from newegg is the MasterLiquid Pro model. You need an upgrade kit for that. But the MasterLiquid 120 (non pro) comes with with the AM4 bracket out of the box.
Via our CM store.
Yeap, the 212 Plus will also be supported via that same upgrade kit, as the Evo.